Hebrews 10:8-18

8 After saying the words I have just quoted, "Sacrifices and offerings or whole burnt-offerings and sin-offerings Thou hast not desired or taken pleasure in" --all such being offered in obedience to the Law--
9 He then adds, "I have come to do Thy will." He does away with the first in order to establish the second.
10 It is through that divine will that we have been set free from sin, through the offering of Jesus Christ as our sacrifice once for all.
11 And while every priest stands ministering, day after day, and constantly offering the same sacrifices--though such can never rid us of our sins--
12 this Priest, on the contrary, after offering for sins a single sacrifice of perpetual efficacy, took His seat at God's right hand,
13 waiting from that time onward until His enemies be put as a footstool under His feet.
14 For by a single offering He has for ever completed the blessing for those whom He is setting free from sin.
15 And the Holy Spirit also gives us His testimony; for when He had said,
16 "`This is the Covenant that I will make with them after those days,' says the Lord: `I will put My laws upon their hearts and will write them on their minds;'"
17 He adds, "And their sins and offences I will remember no longer."
18 But where these have been forgiven no further offering for sin is required.